H3C Technologies H3C S7500E Series Switches User Manual
Page 33
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Figure 17 Grounding the switch through the AC power supply
Grounding the switch through the RTN wire of a DC power
supply
CAUTION:
Make sure the RTN busbar in the equipment room is reliably grounded.
If the switch is powered by a –48 VDC power supply and no grounding strip is available at the
installation site, you can ground the switch through the return (RTN) wire of the DC power supply, as
shown in
.
Figure 18 Grounding the switch through the RTN wire of the DC power supply
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